Finding the Fourth Proportional to 11.59, 15.93 and 10.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11.59 : 15.93 = 10.55 : x
2. Step 2: Convert to fraction form
   11.59/15.93 = 10.55/x
3. Step 3: Cross multiply
   11.59x = 15.93 × 10.55
4. Step 4: Simplify right side
   11.59x = 167.98
5. Step 5: Solve for x
   x = 167.98/11.59
6. Step 6: Final answer
   x = 14.49